Split "Online" and "Offline" AudioContext processing

Source/modules/webaudio/DefaultAudioDestinationNode.h

 /*
  * Copyright (C) 2011, Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1.  Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2.  Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 13 matching lines @@
 
 #ifndef DefaultAudioDestinationNode_h
 #define DefaultAudioDestinationNode_h
 
 #include "modules/webaudio/AudioDestinationNode.h"
 #include "platform/audio/AudioDestination.h"
 #include "wtf/OwnPtr.h"
 
 namespace blink {
 
-class AudioContext;
+class AbstractAudioContext;
 class ExceptionState;
 
 class DefaultAudioDestinationHandler final : public AudioDestinationHandler {
 public:
     static PassRefPtr<DefaultAudioDestinationHandler> create(AudioNode&);
     ~DefaultAudioDestinationHandler() override;
 
     // AudioHandler
     void dispose() override;
     void initialize() override;
     void uninitialize() override;
     void setChannelCount(unsigned long, ExceptionState&) override;
 
     // AudioDestinationHandler
     void startRendering() override;
     void stopRendering() override;
     unsigned long maxChannelCount() const override;
 
 private:
     explicit DefaultAudioDestinationHandler(AudioNode&);
     void createDestination();
 
     OwnPtr<AudioDestination> m_destination;
     String m_inputDeviceId;
     unsigned m_numberOfInputChannels;
 };
 
 class DefaultAudioDestinationNode final : public AudioDestinationNode {
 public:
-    static DefaultAudioDestinationNode* create(AudioContext*);
+    static DefaultAudioDestinationNode* create(AbstractAudioContext*);
 
 private:
-    explicit DefaultAudioDestinationNode(AudioContext&);
+    explicit DefaultAudioDestinationNode(AbstractAudioContext&);
 };
 
 } // namespace blink
 
 #endif // DefaultAudioDestinationNode_h